AMS AS6204 User guide

User Guide

UG000440

AS6204

Eval Kit

AS6204-EK

v1-01 • 2019-Apr-17

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Content Guide

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Content Guide

1 Introduction .................................... 3

1.1 Kit Content .................................................... 3

1.2 Ordering Information .................................... 3

2 Getting Started ............................... 4

3 Hardware Description .................... 5

3.1 Hardware Architecture ................................. 5

3.2 AS6204 Configuration .................................. 6

3.3 Power Supply and Connections ................... 6

4 Software Description ..................... 7

4.1 Index Register .............................................. 7

4.2 Temperature Register ...................................8

5 Schematics, Layers and BOM ...... 9

5.1 Schematics ....................................................9

5.2 Layout and Board Dimensions. .....................9

5.3 Bill of Materials ........................................... 11

6 Revision Information ................... 12

7 Legal Information ........................ 13

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Introduction

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1 Introduction

The AS6204 adapter board is a small PCB allowing a simple and quick evaluation of the AS6204

digital temperature sensors without the need to design a custom PCB. This small form factor board is

fully assembled with the AS6204 temperature sensor and its necessary external components.

1.1 Kit Content

This kit contains following material listed in Figure 1

Figure 1:

Kit Content

Pos.

Item

Comment

1

AS6204-EK-AB

Eval Kit Adapter Board

1.2 Ordering Information

Figure 2:

Ordering Code

Description

AS6204-EK

AS6204 Eval Kit

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Getting Started

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2 Getting Started

The AS6204 adapter board is ideal for rapid setup of a digital temperature sensor. To get started

connect the board to your microcontroller configuration as described in Figure 4. Add a command in

your source code to request two bytes from the selected I²C address. Finally convert the returned data

as described in chapter 4.2 to get the actual temperature value.

Figure 3:

Adapter Board

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Hardware Description

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3 Hardware Description

The P1 connector does provide all relevant signals, which can be easily wired to a microcontroller and

to the power supply

Figure 4:

Adapter Board Pin-Out

Symbol

Description

Info

1

SCL

I²C clock

Use R1 if pull-up is required

2

SDA

I²C data

Use R2 if pull-up is required

3

GND

Ground

4

VDD

Power supply

According datasheet

5

IRQ

Digital output pin

Alert interrupt output

3.1 Hardware Architecture

Figure 5:

AS6204 Adapter Board

R1, R2 and R3 are pull-up resistors for the I²C interface and the Alert pin. Depending on the

application, it is recommended to either populate the decoupling capacitor C1 or C2.

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3.2 AS6204 Configuration

With the address selector, it is possible to choose the I²C address of the device. The included jumper

is an easy way of setting the I²C address of the sensor. The address selector must not be left open.

Figure 6:

I²C Address

Jumper Settings

Address Selector

Device Address

GND

100 1000

0x48

VDD

100 1001

0x49

SDA

100 1010

0x4A

SCL

100 1011

0x4B

3.3 Power Supply and Connections

The PCB has to be connected to an external microcontroller. P1 is populated with a 1x5 pin header

and is required for power supply as well as I²C communication. In addition to that, it can be used to

monitor the interrupt status via pin 5 (IRQ).

Figure 7:

MCU and AS6204 Connections

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Software Description

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4 Software Description

The AS6204 has 4 data registers. With the use of the index register, it is possible to address the

specific data register. When powered up the address register is set to 0x0.

Figure 8:

Data Registers

For additional configuration settings, the Config register (0x1) has to be addressed. Please refer the

data sheet for details.

Figure 9:

Configuration Register

Address

Symbol

Register

Description

0x0

TVAL

Contains the temperature value

0x1

CONFIG

Configuration Register

Configuration settings of the

temperature sensor

0x2

TLOW

TLOW Register

Low temperature threshold value

0x3

THIGH

T

HIGH

Register

High temperature threshold value

4.1 Index Register

The index register contains 8-bit, but only D0 and D1 are used.

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Software Description

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Figure 10:

Index Register

Bit

D7

D6

D5

D4

D3

D2

D1

D0

Value

0

Address Bits

4.2 Temperature Register

Figure 11:

Temperature Register

D15

D14

D13

D12

D11

D10

D9

D8

D7

D6

D5

D4

D3

D2

D1

D0

T11

T10

T9

T8

T7

T6

T5

T4

T3

T2

T1

T0

0

MSB Byte

LSB Byte

The temperature register contains the digitally converted temperature value. It consists of 2 bytes and

can be converted according to the following formula:

Positive values= |Value| / LSB

Negative values= Complement( |Value| / LSB ) + 1

Example +75°C

75°𝐶 / 0.0625°𝐶 = 1200 = 𝐵𝑖𝑛𝑎𝑟𝑦 0100 1011 0000 = 𝐻𝑒𝑥 4𝐵0

Example -40°C

|−40°𝐶| / 0.0625°𝐶 + 1 = 640 + 1 = 𝐵𝑖𝑛𝑎𝑟𝑦 0010 1000 0000 + 1 = 1101 0111 1111 + 1 =

1101 10000 0000 = 𝐻𝑒𝑥 𝐷80

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Schematics, Layers and BOM

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5 Schematics, Layers and BOM

The schematics, layout and BOM of the adapter board are shown below for reference.

5.1 Schematics

The schematics of the board is shown below in Figure 12:

Figure 12:

Schematics

5.2 Layout and Board Dimensions.

The PCB layout is shown below in Figure 13 and Figure 14

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Schematics, Layers and BOM

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Figure 13:

Top Layer

Figure 14:

Bottom Layer

The board dimensions are shown below in Figure 15

Figure 15:

Dimensions

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Schematics, Layers and BOM

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5.3 Bill of Materials

The BOM of the Board is shown below in Figure 16

Figure 16:

BOM

Position

Name

Value

1

R7

NP

2

R6

NP

3

R5

NP

4

R4

NP

5

R3

10 K

6

R2

10 K

7

R1

10 K

8

P1

Header 5

9

C2

NP

10

C1

10 nF

11

AS6204

AS6204 WLCSP

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Revision Information

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6 Revision Information

Changes from previous version to current revision v1-01

Page

Initial version

● Page and figure numbers for the previous version may differ from page and figure numbers in the current revision.

● Correction of typographical errors is not explicitly mentioned.

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Legal Information

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7 Legal Information

Copyrights & Disclaimer

The material herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the

copyright owner.

Demo Kits, Evaluation Kits and Reference Designs are provided to recipient on an “as is” basis for demonstration and

evaluation purposes only and are not considered to be finished end-products intended and fit for general consumer use,

commercial applications and applications with special requirements such as but not limited to medical equipment or automotive

applications. Demo Kits, Evaluation Kits and Reference Designs have not been tested for compliance with electromagnetic

compatibility (EMC) standards and directives, unless otherwise specified. Demo Kits, Evaluation Kits and Reference Designs

shall be used by qualified personnel only.

ams AG reserves the right to change functionality and price of Demo Kits, Evaluation Kits and Reference Designs at any time

and without notice.

Any express or implied warranties, including, but not limited to the implied warranties of merchantability and fitness for a

particular purpose are disclaimed. Any claims and demands and any direct, indirect, incidental, special, exemplary or

consequential damages arising from the inadequacy of the provided Demo Kits, Evaluation Kits and Reference Designs or

incurred losses of any kind (e.g. loss of use, data or profits or business interruption however caused) as a consequence of their

use are excluded.

ams AG shall not be liable to recipient or any third party for any damages, including but not limited to personal injury, property

damage, loss of profits, loss of use, interruption of business or indirect, special, incidental or consequential damages, of any

kind, in connection with or arising out of the furnishing, performance or use of the technical data herein. No obligation or liability

to recipient or any third party shall arise or flow out of ams AG rendering of technical or other services.

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RoHS Compliant: The term RoHS compliant means that ams AG products fully comply with current RoHS directives. Our

semiconductor products do not contain any chemicals for all 6 substance categories, including the requirement that lead not

exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, RoHS compliant

products are suitable for use in specified lead-free processes.

ams Green (RoHS compliant and no Sb/Br): ams Green defines that in addition to RoHS compliance, our products are free of

Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material).

Important Information: The information provided in this statement represents ams AG knowledge and belief as of the date that

it is provided. ams AG bases its knowledge and belief on information provided by third parties, and makes no representation or

warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. ams AG

has taken and continues to take reasonable steps to provide representative and accurate information but may not have

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release.

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